Re: [Yade-users] [Question #669193]: Yong Modulus rescale
Question #669193 on Yade changed: https://answers.launchpad.net/yade/+question/669193 Jérôme Duriez posted a new comment: As a remark which will not really help you with your problems, the "elusive" adjective referred to the doc at https://yade- dem.org/doc/yade.wrapper.html#yade.wrapper.FrictMat.young only. Hopefully https://yade- dem.org/doc/yade.wrapper.html#yade.wrapper.Ip2_FrictMat_FrictMat_FrictPhys is clear enough -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #669193]: Yong Modulus rescale
Question #669193 on Yade changed: https://answers.launchpad.net/yade/+question/669193 Status: Open => Answered Jérôme Duriez proposed the following answer: Hi, As a general remark, I think you are not supposed to mix Ip2_FrictMat_FrictMat_FrictPhys() and Ip2_CohFrictMat_CohFrictMat_CohFrictPhys() functors. Because of class inheritance Ip2_CohFrictMat_CohFrictMat_CohFrictPhys() should be enough. Mostly, having two Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(), differing only with setCohesionNow value, is meaningless and clearly not intended by the design of this class. Did you have in mind something in particular mixing all these functors ? Regarding now your issue with young material parameter, are you aware this may not be the particle Young's modulus ? (see the -- maybe elusive-- doc [*]) Actually in your case, young is not the particle Young's modulus because you do not seem to use Hertz Mindlin contact law. Thus, a curve fitting calibration step is mandatory before you can expect getting back experimental results. (And I did not understand the rescaling concept :-) ) Jérôme [*] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FrictMat.young and https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Ip2_FrictMat_FrictMat_FrictPhys -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
[Yade-users] [Question #669193]: Yong Modulus rescale
New question #669193 on Yade: https://answers.launchpad.net/yade/+question/669193 Hi everyone, I tried to simulate a one dimension excitation of material built of spheres. I have a problem with young modulus rescale because I wanted to use spheres with a diameter bigger than the width of material. I tried to rescale Young module with this equation: E = Ef * w /(2 r) where E - is Young Module; Ef - is the young module from the experiment, w - width of material and r is the radius of spheres. When I check the results of one dimension excitation the results from experiments (sigma/ epsilon) and from yade are not thesame (like there is some multiplication in Young Module) I use in Engine: [Ig2_Sphere_Sphere_ScGeom6D(interactionDetectionFactor=1.3), Ig2_Wall_Sphere_ScGeom(),Ig2_Facet_Sphere_ScGeom6D()], [Ip2_FrictMat_FrictMat_FrictPhys(), Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=False,setCohesionOnNewContacts=False), Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False), ], Pawel -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
